#include<stdio.h>

int main()
{

    char a[100]="hello";
    char *b="world";
    a[0]++;
    puts(a);
    b=a;
    //strcpy(b,a);//b=a;
    a=b;//error should strcpy(a,b)
    b[0]++;
    puts(a);
    return 0;
}
